ActiveMQ example source code file (MessageCompressionTest.java)

This example ActiveMQ source code file (MessageCompressionTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

activemqbytesmessage, activemqconnection, activemqconnectionfactory, activemqconnectionfactory, exception, io, jmsexception, net, network, session, string, string, text, text, the, the, utf8

The ActiveMQ MessageCompressionTest.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.activemq.command;

import java.io.UnsupportedEncodingException;
import java.net.URI;

import javax.jms.BytesMessage;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;

public class MessageCompressionTest extends TestCase {

    private static final String BROKER_URL = "tcp://localhost:61216";
    // The following text should compress well
    private static final String TEXT = "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. " + "The quick red fox jumped over the lazy brown dog. "
                                       + "The quick red fox jumped over the lazy brown dog. ";

    protected BrokerService broker;
    private ActiveMQQueue queue;

    protected void setUp() throws Exception {
        broker = new BrokerService();

        TransportConnector tc = new TransportConnector();
        tc.setUri(new URI(BROKER_URL));
        tc.setName("tcp");

        queue = new ActiveMQQueue("TEST." + System.currentTimeMillis());

        broker.addConnector(tc);
        broker.start();

    }

    protected void tearDown() throws Exception {
        if (broker != null) {
            broker.stop();
        }
    }

    public void testTextMessageCompression() throws Exception {

        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(BROKER_URL);
        factory.setUseCompression(true);
        sendTestMessage(factory, TEXT);
        ActiveMQTextMessage message = receiveTestMessage(factory);
        int compressedSize = message.getContent().getLength();

        factory = new ActiveMQConnectionFactory(BROKER_URL);
        factory.setUseCompression(false);
        sendTestMessage(factory, TEXT);
        message = receiveTestMessage(factory);
        int unCompressedSize = message.getContent().getLength();

        assertTrue("expected: compressed Size '" + compressedSize + "' < unCompressedSize '" + unCompressedSize + "'", compressedSize < unCompressedSize);
    }

    public void testBytesMessageCompression() throws Exception {

        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(BROKER_URL);
        factory.setUseCompression(true);
        sendTestBytesMessage(factory, TEXT);
        ActiveMQBytesMessage message = receiveTestBytesMessage(factory);
        int compressedSize = message.getContent().getLength();
        byte[] bytes = new byte[TEXT.getBytes("UTF8").length];
        message.readBytes(bytes);
        assertTrue(message.readBytes( new byte[255]) == -1);
        String rcvString = new String(bytes, "UTF8");
        assertEquals(TEXT, rcvString);

        factory = new ActiveMQConnectionFactory(BROKER_URL);
        factory.setUseCompression(false);
        sendTestBytesMessage(factory, TEXT);
        message = receiveTestBytesMessage(factory);
        int unCompressedSize = message.getContent().getLength();

        assertTrue("expected: compressed Size '" + compressedSize + "' < unCompressedSize '" + unCompressedSize + "'", compressedSize < unCompressedSize);
    }

    private void sendTestMessage(ActiveMQConnectionFactory factory, String message) throws JMSException {
        ActiveMQConnection connection = (ActiveMQConnection)factory.createConnection();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer producer = session.createProducer(queue);
        producer.send(session.createTextMessage(message));
        connection.close();
    }

    private ActiveMQTextMessage receiveTestMessage(ActiveMQConnectionFactory factory) throws JMSException {
        ActiveMQConnection connection = (ActiveMQConnection)factory.createConnection();
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer consumer = session.createConsumer(queue);
        ActiveMQTextMessage rc = (ActiveMQTextMessage)consumer.receive();
        connection.close();
        return rc;
    }

    private void sendTestBytesMessage(ActiveMQConnectionFactory factory, String message) throws JMSException, UnsupportedEncodingException {
        ActiveMQConnection connection = (ActiveMQConnection)factory.createConnection();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer producer = session.createProducer(queue);
        BytesMessage bytesMessage = session.createBytesMessage();
        bytesMessage.writeBytes(message.getBytes("UTF8"));
        producer.send(bytesMessage);
        connection.close();
    }

    private ActiveMQBytesMessage receiveTestBytesMessage(ActiveMQConnectionFactory factory) throws JMSException, UnsupportedEncodingException {
        ActiveMQConnection connection = (ActiveMQConnection)factory.createConnection();
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer consumer = session.createConsumer(queue);
        ActiveMQBytesMessage rc = (ActiveMQBytesMessage)consumer.receive();
        connection.close();
        return rc;
    }

    // public void testJavaUtilZip() throws Exception {
    // String str = "When the going gets weird, the weird turn pro.";
    // byte[] bytes = str.getBytes();
    //
    // ByteArrayOutputStream baos = new ByteArrayOutputStream(bytes.length);
    // DeflaterOutputStream dos = new DeflaterOutputStream(baos);
    // dos.
    // }
}